Move Windows 8.1 SkyDrive Cache

A: By default, SkyDrive (soon to be renamed OneDrive) uses a local cache for SkyDrive content that has been configured to be available offline. Also by default, the cache is found under the user's profile; for example, C:\Users\<username>\SkyDrive. You can move the cache, if required, to another location:

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OK. One thing I don't like [unless changed in newer versions] is a way to sync what I want in My Docs with either OneDrive or Dropbox. For both, I have 25+ GB but barely using the space because neither allow the option of syncing them without actually moving My Docs [or a portion of them] directly inside Dropbox or OneDrive. Or did I miss something?